[PDFBOX-1757] Errors parsing/extracting text from a PDF

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 1.8.2
• Component/s: Parsing
• Environment: Ubuntu Linux & Windows 7 (both JDK6)
• Assignee: Timo Boehme
• Reporter: William Palmer
• Created: 24/Oct/13 12:45
• Updated: 05/Nov/13 11:36
• Resolved: 04/Nov/13 10:58

Description

I am trying to extract text from PDFs. Extracting text from the test file http://digitalcorpora.org/corp/nps/files/govdocs1/020/020747.pdf causes exceptions to be thrown.

The first:
Exception in thread "main" java.lang.RuntimeException: java.io.IOException: Value is not an integer: 636121514401477526485946144
at org.apache.pdfbox.pdfparser.PDFStreamParser$1.tryNext(PDFStreamParser.java:187)
at org.apache.pdfbox.pdfparser.PDFStreamParser$1.hasNext(PDFStreamParser.java:194)
at org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:255)
at org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:235)
at org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:215)
at org.apache.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:455)
at org.apache.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:379)
at org.apache.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:335)
Caused by: java.io.IOException: Value is not an integer: 636121514401477526485946144
at org.apache.pdfbox.cos.COSNumber.get(COSNumber.java:104)
at org.apache.pdfbox.pdfparser.PDFStreamParser.parseNextToken(PDFStreamParser.java:351)
at org.apache.pdfbox.pdfparser.PDFStreamParser.access$000(PDFStreamParser.java:46)
at org.apache.pdfbox.pdfparser.PDFStreamParser$1.tryNext(PDFStreamParser.java:182)

Code to cause above exception:
PDFTextStripper ts = new PDFTextStripper();
PrintWriter out = new PrintWriter(new FileWriter(new File ("020747.txt")));
PDDocument doc = PDDocument.load(new File("020747.pdf").toURI().toURL(), true);
ts.setForceParsing(true);
ts.writeText(doc, out);

Using the following code causes a different exception until org.apache.pdfbox.baseParser.pushBackSize is increased (only tested 1024768). After it is increased I get basically the same exception as above

PrintWriter out = new PrintWriter(new FileWriter(new File("020747.txt")));
PDFParser parser = new PDFParser(new FileInputStream(new File("020747.pdf")));
parser.parse();
PDFTextStripper ts = new PDFTextStripper();
ts.setForceParsing(true);
ts.writeText(parser.getPDDocument(), out);